Index device for step and repeat and other machines.



L. J. R. HULST. INDEX DEVICE EOE STEP AND REPEAT AND OTHER MACHINES.

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INDEX DEVICE FOR STEP AND REPEAT AND OTHER MACHINES.

Specification of Letters Patent.

Patented Dec. 11. l

To all whom 'it may concern:

Be it known that l, lioDnwrK JAN RUT- GER HOLST, a citizen of the United States. residing at Lansdowne. in the county of Delaware and State of Pennsylvania, have invented certain new and useful lmprovements in ndex Devices for Step and Repeat and other Machines, of which the following is a specification.

My invention has relation to an index de vice adapted for employment in connection with an apparatus which has become known as a Step and repeat machine for photographie lens work among' many other practical uses therefor; and in such connection the present invention relates to the general 'constructive arrangement ot auch a device.

The nature and scope of my pre ent invention will be more fully understood from the following description taken in connection with the accompanying;r drawings, in whichel"i ,1ure 1, is a front elevational view of a lockingr device, embodying the main features of my invention. Fig. 2, is a side elevational View partly in section, of Said locking' devi Fig. 3, is a detail View in section of means for lockingr the index ring otl 'said device. Fig. 4, a view in broken section, showing in detail the notches on the inner circnn'xference of the division ring; and Figs. 5, (3 and 7, are respectively, in side and front elevations, the righthand rider and inside elevation, the left-hand rider of the index-ring.

Referring),l to the drawings, 14, in t`igs. 1 and 2, is the spindle upon which the main parts of the mechanism are mounted. This spindle is supported in a suitable bearing 14, of a bracket` 1G, which latter is rigidly atT tached to the framework of the machine to which the index device is applied. Keyed to the spindle 14a, is the crank-handle 26, which carries a laterally movable pin 2T, adapted to engage any one of a number of perforations, one'hnndred in the case as illustrated, and circularly disposed 1` sar the edge of the index plate 28. This indexplate Q8, is freely mounted on a buehing attached to the Spindle 14, and has two notches 28 and 28C, cut in its circumference. The notch 98h, coincides radially with the position of the zer0-point of the divisione engraved on the index plate, and the .notch 28C. may be at any conveni.,it, point ot thc flo circumference,'where it can lar hren t into engagement with a locking'fpin Se@ nfahtc by means of the knob 3S, in the 1t liti, rigidly attached to any conwnient mit or' the framing,Y ot the machine not ahown. and to which the indexY device applied. The, purpose of both noteheawill he implante-fl later.

The index plate 2S, carrie one on its back the spurqear 29, ri nected to it b v means of a ci les. 28d. This spur-gear 28a, adaptat willi the pinion 30, havingr an): n number ot' teeth and which mounted on the pivot l5, attaibracket 1G. Directly behind the index-g 2S. with its spur gear 28d., a v Qt), is loosely mounted on tl 1, tioned bushingy of the Spindle nuniher of teeth in the gear 29, ithan that in the ,gear 283. The pinion lt, is wide enough to simnltantn'nflly nuwh with both spungears. The spurrvgcar loosely the ring 29a, concentrcaly on the back thereof. This ring is pint@ with a number ot' incisi' n radii.. it;` inner edge, and correpm "Ane" ber to that of the teeth ot the car i retaining ring Q9", herve# to hohl Q95. on the gear 29. and the lo lli" in Figs. 2 and It, permiteJ the ning 21), and the gear 'fiori engaging any one of y of thc rotating ofthe ring v ot the spung'ear 29, after being,r i from said inciaittne. The front ft" i 29, is provided with :t projecti` Fig. 3, of an outer diameter ci ri. to the outer diameter of the index if The portion ot the ring` 29". ont" projecting` ring' 2W, i provit sione corresponding to the number; in the Spur-gear 2f). Thorac latter are entirelv separate from a vided on the indexplate il., different purpose to he fuliy c .i the description of the operatimi vice. fn the device here illu` spur-gear Q8". has 9G teeth, and gear 29, has teeth, hence thev iin: et t index ring 00 is divided in 35 paren i division line corresponding in location with the middle of one of the incisions in the inner edge of said ring. Similarly to the index-plate Q8, the projecting ring 9.9, of the index-ring 29, has a notch 29C, at a point correspondingr with the zero-point of its divisions. The notch '29", can thus be adjusted to stand immediately behind the corresponding notch 28, in the i ndeX-plate Q8, thereby permitting' of the locking of the index-plaie :28, and the indexrinp1r 29, simultaneously against rotation, by engaging in the notches the laterally projecting pin 31, of the catch 31", which is rotatably mounted on the pivot 15. \Vhen so locked the zero-points of the divisions on the in-A dex-plate Q8, and on the index-ring 29, will vstand in the same circumferential position.

The front of the Index-plate 28, is provided with an extended hub 28e, upon which is rotatably mounted the spring acting index finger 36. This finger itselt` carries a hubshaped projection upon which the similarly spring acting index tin er 85, is mounted. Agroove in the hub o the finger 36, engages the head of e screw 36", serving to lock the two fingers together in any desired angular adjustment. Y beyond the rim of the index-plate 28, and are made of suitably tempered steel thin enough to permit of lifting the pins 36 and 35, out of engagement with the perforations of the index-plate 28, Whenever y,they are to be moved around said plate. Said pins 3G and 35, engage perforations eti-the indexplate when at rest in their adjusted position, thereby preventing the fingers from accidental or unobserved shitting of their position.

A rider QQ, is adapted to 'oe adjusted and secured to any required point on the indexring QQ, the leftl edge of which rider is cut out for the purpose of engaging with the rear end ot' the pin $31, of the catch 31a, thereby holding; said catch out of engagement with the noiwhcs 2S and 29. This rider Q9" either right handed as illustrated in Figs. l and for a clock-wise rotation ot the erice, or lett-handed as illustrated in Fig. 7 when the mechanism is to be operated in a counter-clockwise direction.

The right and left hand ridersl as shown in Figs. 5, 6 and 7, respectively, are designed to stradt'lle the outer edge of the ringr Q0, as shown in Fig. l, and to be clamped at the desired point by means of the knurled screw 29g, the end of which reaches to the bottom of the circular groove 39, in the back of the ring Q9. This groove retains the end of the screw 295. and thus revente the rider from dropping ott` when the screw is loosened.

The operation of the mechanism as described, to automatically stop the rotation of the. shaft. 14, after it has completed a certain predetermined number of complete Both fingers project.

revolutions, with or without any additional fraction of a revolution, can be best` exlained by means of a numerical example, or which urpose it is assumed that starting from tlie zero-position, the shaft 14, is to make 15 and 1/10 revolutions. In that case the rider 29", is attached to the indexring 29a, so that its left front edge coincides with the division line 15, of the said ring, as shown in Fig. 1, said ring serving 'for the indicating and regulating of any number of complete revolutions. Now the finger 36, is brought into Contact with the pin 27, of the crank-handle 26, which engages the hole zero of the index-plate divisions. The pin 36, of the finger 36, will then engage the hole 99. The linger 35, is turned until its pin 35, engages the hole number 11, in which position the nu# on the screw 38, is securely tightened. The pin 27, of the handle 26, is now withdrawnfrom engagement with the zero hole in the index-plate 28, and this handle turned until the pin 27, shuts against the inner face of the linger 35, in which position it is directly in line with the hole 10, of the index-plate 28, and is pressed into engagement therewith. whereby the shaft 14, has been rotated through 1/10 of a revolution as regulated by the Yperforation y in the index-plate. Non' the locking lever 32, is turned downward as shown in Fig, 2, and the catch-pin 31, lifted out of the notches 29 and Q8", thereby liberating the index-ring 29a, which is now turned counter clock-wise, until the recess in the leftedge of .the rider receives the pin 31, whereupon 1 v c f the locking-leicr 2, is again put 1n operative position as in Fig. 3. The notches for the engagement ot' the said lever 3Q, being clearly illustrated in Fig. 4. This movement has brought and looked divisionr mark 15 of the ring 2921, into a position corresponding with the zero-niark of the index-plate 28. It. will be observed that when lifting the Catch-pin 3l, out of the notches 28h and 29C, of the plate 28, and the ring: 29, these elements are not yet unlocked, ont the pin 38 must be also Withdrawn from the notch. Q80, in the plate QS. before this. plate and the ring 29, can be rotated around their coinmon spindle 14, The shifting of the handle 26, from the Zero-point to the holo number 10, has turned the handle Q0, and with it the shaft 14, through 10/100 or 1/10 of a revolution. It remains thus to now make still 15 revolutions to con'iplete the assumed operation. To eiicct this, the pin 38", iS now withdrawn from engagement with thehiotch 28, and the crank-handle Q6, is rotated in a clock-wise direction. The pin 27, of this handle causes the induit-plate 28, to rotate with the said handle and consequently the spur-gear 28a, to act as a driver for the pinion 30, causing thereby the said pini'in in its turn to drive the spur-gear 29. As the latter Spnr-ge spur-fear 28.

ivheel 2S, for el ery ar has; one tooth less than tli`e`i it will gain one tooth over the 2 couipete revolution of if the. latter.` rlilieretore, after completing; lo revolutions ot the wheel ih", the .vheel L9,

:permit a determined number of complete will have. pained l5 teeth, wherein' the not-eh 39", of tluindex-ring 20, attached to the wheel Q9. will again have reached a corresponding radial position \vith the notch QS", of the Said index-plate. The loch-pinV fil. ivill thus` drop into ther-e tivo notches and lock the entire meehani-'in against further rotation. The entire oyeration ran now be repeated by first legliing the pin 3S". ini'the notch QSC. and h v then again adjusting the handle 2V. and the ring Q0, as previously described, and finally again unlockingr the pin 28".

,llaving thus described the nat-ure and objects of my Said invention. what I claim ae new and deaire to Secure byl Letters Patent isfl. ln an index device. a Spindle journaled to a Stationary part of the device`v a pivot carried by said stationary part, a pinion and a catch freely mounted on said pivot, a handle keyed to said epindle. a perforated index-plate loosely mounted on Said Spindle, a laterallyv movable pin in Said handle adapted to engage the perforations of said index-plate. movable tingers on the faee of @aid index-plate to regulate the adjustments. of the handle on Said index-plate, a concent-rieallv mounted Spur-neel at. the back of laid index-plate, Said Spur-Wheel lmeshing with Said pinion, a second Spur-Wheel looeely mounted en the spindle of said index-plate ai d also meshing with said pinion, saidecond spur-wheel having a number of teeth differingr by one from the number .of teeth of the spur-wheel of said index-plate and a ring arran ed eoncentrieally on the back of said secon spur-wheeland rotatable in a plane parallel therewith, Said ring being adapted to he clamped thereto and the outer portion of, Said ing carrying divisions corresponding to the number of teeth of said second spur-wheel, said index-plate and ring each beingr provided with a notch at a point of their periphery corresponding with the xero-point of the perforations of said indexpl'ate and oi' the divisione of said indexring respectively, said catch pivoted on the stationary part of said locking device being arranged to engage.'simultaneously botlLof said notches; thereby to lock said. index plate and ring in their respective zero-positions.

2. ln an index device, a `epindle, a locking device controlling` said Spindle. and having a stationary part `upporting Said'spindle, a handle keyed to said spindle. a. perforated index-plate loeSely mounted on said spindle.. a laterally movable pin in .said handle adapted to engage the, perforations of said index-plate, Said index-plate being provided with a notch, adjustable index fingers: on the tace of' the index-plate to limit movement of -`aid handle within one complete revolution and a catch adapted to engage and disenj "ae'e the notch of .Said index-plate s0 :1S to revolutions of said handle and spindle in unison -with said index-plate.

25. In au index device, a spindle journaled to a Stationary part of the device, a perfrrated index-plate to indicate the fraction .of a revolution of .Caid spindle, an indexring to indicate complete revolutions of Said spindle. said index-plate and index-ring being both journaled freely on said spindle and operative connections to cause said index-plate and index-ring to return to and stop' at their common zero-point after having made a number of complete revolutions with said spindle.-

4. In an index device, an index plate having division holes and spring acting lingers provided with lock-pins, said fingers project-ing beyond the edge of said plate so as to permity of ready disengagement ot' the lock-pins of Said fingere from the division holes of said plate.

In an index device, the combination with a support and an index-plate provided with two notches and a movable catch, adapted to engage one of said notches of a movable lock-pin, adapted to engage the other of said notches, thereby to hold said index-plate in a locked position after said movable catch has been disengaged.

G. ln'an index-"device the combination of two membere hauling divisions, operativel)y connected with each other, the divieions of one of Said inerifbers indicating and con trollingr a fractional rei elution and the divi,- sion of the other of Said members indicating and controlling complte revolutions, substantially/as and for the purposes described.

7. In an index device, the combination of two adjustable index members, said members having divisions adapted renpectivelv to iudicate and control fractional and complete revolutions-of Said members. sulif-'tautially as and for the purposes described.

8. ln an index device. the combination of two Vadjustable inde\v members, ,raid meinbers having divisions adapted reapeetivety to indicate 'and control fractional and Loinplete revolutions and means to lock yeaid members.

t). In an index device, the eon'ibiuation of two adjlntable index members.` mid inembers having divisions adapted resspeetively to indicate and control fractional and complete revolntions ard means to lock said members at the termination of any predetermined number of revolutions thereof.

10. 111 an index device, an index-plate provided with a pair of lingers having pins arranged to engage divisionholes 0f' said I my signature in the presence of the two sub- .)phe, and' said plte alsovhnving notches scribing Witnesses hereto. anv .-L'Catch, in com iuation 'with a 1ock-pn warranged to hold said plate in a, locked p0`si. LODEWYK JAN RUTGER' HOLST' 5 tion, after the said catch has been disen- Witnesses:

gaged. Y THOMAS M. SMITH,

In Wmess wheeof, have hereunto set HELEN F. MILLER. 

